@article{hertwig_trippner_lentes_2019, 
  title={Certification of Openness – Corner Stone of an Agile PLM Strategy}, 
  volume={39}, 
  DOI={10.1016/j.promfg.2020.01.318}, 
  publisher={Elsevier BV}, 
  author={Hertwig, Michael and Trippner, Dietmar and Lentes, Joachim}, 
  year={2019}
  }